Grease-cup.



A. C. GRUNWALD. GREASE CUP.

APPLICATION FILED NOV. 14. I916.

1,227,131 Patented Ma 22, 1917.

nu: unnms Pawn; 50., PMo'ro-unw" wasmucmu. u. 6.,

. tional view of bearing equipped with the im- ALBERT o. GRUNWALD, orcnroaeo, ILLINOIS, ASSIGNOR TO :PRECISION' METAL woRKERs, OF CHICAGO,rumors, A CORPORATION OF ILLmoIs.

GREAsE-cUP.

Specification of Letters Patent. I

Patented May 22, 1917.

Application filed November 14, 1916. Serial No. 131,194;

to grease-cups equipped with agitators or feed devices.

The invention may be applied either to a stationary journal-box or to amovable journal-box, for instance, the invention may be applied to thestationary journal-box of an engine shaft, or to the movablejournal-box. of the connecting rod. In either case, the,

device operates successfully owing .to the normal vibration or to theoperation of the machine.

The present invention is in the nature of a modification of theinvention, set forth inmy application No. date herewith. V

The primary object of the present invention is to provide a simple and.desirable form of connection-between thegrease-cup 131,193, filed ofeven and its cap, whereby thetcap may be securely locked to thegrease-cup and still be capable of being detached from the greatestfacility.

Inthe accompanying drawing, the inven-. tion is shown applied toastationary-bean; ing, but it will be understood that it may be appliedto a movable bearing,

stance, to the journal-box of the connecting rod. In the constructionillustrated- Figure 1 represents a broken vertical secproved grease-cup;Fig. 2, a perspective view showing the grease-cup brokenly and the capdetached from the grease-cup; Fig. 3, an enlarged broken horizontalsectional viewtaken as indicated in line 3 of Fig. 1; Fig. 4, a brokensectional view showing a modification of the grease-cup cap; and Fig.

5, an inner view of the cap shownv in Fig. 4. H

In the construction illustrated, A represents a journal-box; B, thejournal of a shaft; 0, a grease-cup equipped with a cap C and D, anagitator orfeed device mounted in the grease-cup and having a stemextending through an opening 1 1n the upper 1211 which is incidental.

the grease-cup with as, for in-' wall of the j ournal-box and restingupon the journalB. i

The grease-cup O has a nipple provided with a threaded portion 2 andwith a hexagonal portion 2 The upper portion of a passage 1 iscountersunk and tapped and the nipple 2 is screwed therein. A retainer'3 serves to prevent unscrewing of the grease cup, said retainer havinga hexagonal perforation receivingthe hexagon 2 and having arms engagingthe journal-box.

The cap'Cl is provided with a downturned flange wh'ich'has bayonet-jointconnections with the upper portion of the grease-cup C. Theseconnections may be provided by striking. the metal of the cup outwardlynear the upper edge of the cup to form diametrically oppositej studs orembossments 4:, and by striking the metal of the flange of the cap CFoutwardly at diametrically. opposite points to provide bayonet-slots 5,The bayonet-slots 5v are provided with ofl'sets 5 whose lower wallsafi'ord' shoulders which thestuds 4 engage in the locked condition ofthe cap.

Adjacent one of the studs 4:, the metal of the cup is struck inwardly toform a vertical. depression 6' which accommodates a leaf-spring 7 whoselower end is secured by means of a rivet -8. The main body-portion ofthespring 7 is struck outwardly so that f of the spring being bent inwardlyor beveled I when the-cap is placed on the cup.

.In applying the cap to the. cup, the cap is turned so that the studs 4.will enter, the

lower ends ofthe bayonet-slots, after whichthe cap is turned to causethe lower walls of the offsets 5 'oftheslots to engage the studs asshown in Fig. 3, thus locking-the cap to the cup. After such rotation,the spring 7 engages the bayonet-slot in the flange of the the springprojects normally a little beyond the outer surface of the cup,the'upper end cap as shown in Fig. 8, so that the cap, cannot .be turnedin the reverse direction until the spring 7 is depressed, as by placingthe thumb upon it. Thus the spring associatedwith the grease-cupanditscap serves effectively to maintainthe bayonet-joint connections ininterlocked relation, so that the cap is securely held upon thegrease-cup. v

' f orotrudes throu h a central ooenin in the a b V V the combination ofa grease-cup, a cap prov The agitator D comprises a rod 9 equipped witha conical member or feed head 10; and a light coil spring 11encirclingthe rod 9 and interposed between the cap C and the member 10.The upper end of the rod 9 7 cap C which thus serves as a guide.

In the modification shown in Figs. land 5, the construction is the sameas described except that the cap C 'is of modified form.

' In this case, the cap is provided with an upwardly struck centralportion or hollow embossment, 12, which serves as a housing for theupper endof the rod 9. Across the open lower end of the embossment 12extends ametalplate 13 whose ends are riveted to the cap and which has acentral perforation which afiords'a guide for the rod 9.Thebayo'net-joint connections andthe locking spring 7 are the same as inthe pre{ The spring "11,in this case,bears at'its' upper end against theguide plate 13.

'Certain of the features of construction herein illustrated are fullydescribed and claimed in the co-pending application men- I tioned above,and need not be further clescribed herein.

In the use of the improved device, the

normal vibration or jar incident to the oper'ation' ofany engine ormachine sufiices to '7 move the agitator D. The spring confined betweenthe cap and the enlargement on the agitator serves to return theagitator repeatedlyto its bearing on the journal B, and

prevents the agitator from being wedged or held upwardly; by greasesettling between the cone -10 and'the' contracted Walls of the lower'end of the grease-cup, V V

;The bayonet joint andlockingspring disclosed'herein are simple, cheapand fthor oughly effective for the purpose. The cap may be'removed withthe greatest facility from the grease-cup, as occasion may req -o .7 a

' The foregoing detailed description has been given for clearness ofunderstanding only, and no necessary limitation should be v understoodtherefrom, but I the appended vided with :a down-turned V flange havingbayonet-joint connections with the upper greasecup, and a springinterlock between said cup and the flange of said cap and therebymaintain.

portion of 'said adapted to said bayonet-joint connections "ininterlocked relation. r

2. In a device of the ob aracter set forth, the combinatlon of agrease-cup equ pped and desire to S externally with a'verticallydisposed spring,

and a cap provided with a down-turned flange having bayonet-jointconnections or with the upper portionof said grease-cup,

the flange of said cap having a shoulder adapted to interlockinglyengagesaid spring and maintain saidbayonet-j oint connections r r ininterlocked relation. r

3. In a device-of the character setforth, the combination of agrease-cup equipped, with a laterally projecting stud and adja centthereto with a depression in the QXtBI' nal surface of the cup, a springsecured to the cup and adapted to be accommodated by said depression,and a cap provided with a flange having an outwardly-struck wall'alffording a bayonet slot, said bayonet 7 slot adapted to beinterlockingly engaged by i said spring andhaving anofiset shoulderadapted'to interlockingly engage said stud; 4. In means of the characterset forth,

the combination of a grease-cup having a' i i nipple adapted forconnection with'a journal-boX," a' cap detachably secured to said i rcentral embossment, a guide-member car- I 7 ried by said cap andhavlng'a centrally-disposed guideopen ngand' an agitatornsaid, ogrease-cuphav1ng a rod. with-its lowerend I grease-cup and having anupwardly-struck protruding through said nippleiand its upperendprojecting through said guide-mem her into said embossment. V V a VALBERT C. GRUNWALD,

Copies of this patent-may be obtained ifor five cents each,byaddressing'the Qommissioner of Patents,

Washington, D. C.

